Humidifying or air-moistening apparatus



v J. J. SMITH yHUMIDIFYIMT ORL-AIR MOISTENING'APPARAT'US Filed march 14, 1925 lPatented Dec.` 7, 1926.

JOSEPH J. SMITH, OF BOSTON, MASSACHUSETTS HUMIDILFYING OR AIR-MOISTENING AiPlE'A.'l'.'tA'.l."UBl

Application mea march -14., 192s. serial No. 625,170.

` reference to the nozzles of such apparatus.

. part of the nozzle;

An object of the invention is to provide a nozzle of this character which is simple in construction', and more economical and eticient in use than those heretofore provided.

Another object of the invention isto provide a nozzle of this character which may I be easily assembled and taken apart, and

in wh'ch the parts thereof may be easily adjusted to meet diiferentlconditions.-

Another object of the invention isto provide novel and improved means forsupporting the nozzle ,of humidifying or air moistening apparatus in such a manner as to enable it to be bodily adjusted as 'de- The following is vention, reference being had to the accompanying drawings, in which,.

Figure 1 is a sectional elevation of a portion of a humidifying or air moistening apparatus, with parts broken away to save space, embodying the features of the inven- .tion in their preferred form; a

Fig. 2 is a detail longitudinal sectional view, partly in elevation, of the nozzle that may be used inthe apparatus; y Fig. 3 is a detail end view ofl a component Fig. 4 is a front end view ofthe nozzle; and

Figs. 5, 6 and 7 are transverse sectional views taken on the lines 5 5, 6-6 and l7'?', respectively, yof Fig. 2.` l

The humidifying or-air moistening ap paratusv illustrated-in thev drawings is provided 'with a nozzlehaving a cylindrical casing 2 which has its front end'open and its rear end closed. A -nipple 4 is'screw threaded into the forward end of the cas ing-against a washer 6 that abutsv against -a shoulder 8 formed on the interior of the cylindrical wallof the casing. The rear end of theyl nipple 4 is open and its front end wall is provided with a centralorice' 10. of relatively small diameter. A disklike plug 12 is screw-threaded into the vrear portion of the nipple 4 to a position substantially midway between. the ends ofthe nipple. The plug 12 forms a partition which, together with the wall of the projecting forward portion of the nipple 4, provides a chamber 14. The inner peripheral .wall of a description of my inscrew-threaded on the tube.

the chamber 14 is contracted toward its forward end and the rear portion of the oriice 10 is countersunk. The partition 12 is provided with a central orifice 16 which is in axial alinement with the orifice 10 and is of slightly greater diameter than the latter orifice, the rear portion of this orifice being countersunk. The partition 12 is provided with sockets 18 to enable a socket wrench to be used in 'screwing it into and out of position. lThe interior lof the casing 2 is in. communication with-a main compressed air supply pipe 20 through a branch pipe 22 which is provided with a union 24,

the outer member of which is screw-thread-A ed intoan aperture inl the underside of the cylindrical wall of the casing. The branc pipe 22 is also provided with a handcontrolled valve 26.

The rear end wall of the casing 2 is rovided with a central aperture through w ich is screw-threaded a tube 28, the' screwthreaded joint between the tube and casing being maintained air tight by means of a packing material 30 and a packing nut 32 The yforward end of the tube 28 is spaced a distance from the partition 12 and a cap-like nipple 34 is screw-threaded on the end of the tube. This provided with an orifice 36 l nipple 34 is which is in axlal alinement with the orices 16v-and 10 and is of much smaller diameter than the 'orifice 16.v The outer peripheral surface of y the forward portion of the Wall of the orifice 36 is cylindrical and of smaller diameter than the orifice 16, and said wall extends up to the rear end of the orificeA 16. `The portionv of the wall of the nipple 34 that surrounds the tube 28 is cylindrical and the portion of the wall between this cylindrica portion and the reduced cylindrical wall of' the orifice 36 .is tapering.

.The cylindrical portionof the nipple surrounding the tu 28 is provided with longitudinally exten ing equally spaced ribs 42 which substantially `fit the, inner wall of the nipple 4` and taper. downwardly from their forward ends toward the cylindrical wall of the orifice in the nipple. The rear ico'V end of the tube 28 is connected'by a union 44 with a curved U-shaped ipe 46 that leads from a main liquid supp y pipe 48 ar.- ranged in juxtaposition below and parallel with the air supply ipe I.20, the pipe 46 having a hand-control ed valve 50. y

When. water andair are directed under suitable pressures 'into 'the nozzle throu h the pipes 46 and 22, respectively, it will e apparent that a fine thread of water will be directed by the nipple 34 centrally through the orifice 16 and that this jet of water will be surrounded by a jet of compressed air as it passes through the orifice which, immediately upon its release in the chamber 14, expands Vsufiiciently to completely -fill the chamber and to cause the wat-er and air to mix thoroughly and the water to become .more or less va orized, al turbulent action being set u int e chamber. 1G is slight y smaller than the orifice 16, this mixture of air and water is forced through the orice 10 under considerable pressure with the result that the air in the mixture, expanding with great force immediately upon its releaseI from the nozzle, Vaporizes the water to such a fine degree that the atmosphere absorbs every particle without any precipitation or con ensation at any temperature experienced where artificial humidification is needed or required.

It has been found that withl the use of this nozzle, the maximum degree of vaporization is secured at a minimum degree of pressures of the water and. air and hence the device is more economical in usethan those heretofore provided. Bv turning on the air before turning on the water, and shutting off the water before shutting oflv the air, it will be apparent that no spitting or dripping of the nozzle takes place.

The ribs 42 serve as spacing ribs to insure that the orifice 36 in the nipple 34 shallbe in alinement with the orifices 16 and 10, and also as these ribs are equally spaced apa-rt they insure that the compressed air shall be directed uniformly around the fine jet of water as it emerges from the orifice 1n the nipple 34 and passes through the orifice in the partition 12. Thev screw-threaded mounting of thel nipple 34, the partition 12,

'the tube 28, and the nipple 4 enables these parts to be minutely adjusted to meet different conditions, the ribs 42 enablin a suitable-wrench to be,employed to a just the nipple 34. The screw-threaded mounting and arrangement of the parts of the nozzle enables the nozzle to be easily assembled and taken apart. v

In humidiying apparatus of the type of the one descri edl a series of nozzles are usually employed that are connected up and supported by the main air and water supply plpes. When a series -of nozzles are thus f employed it is of great im ortance that they shall be capable of being odily adjusted to different positions so as to secure the maximum efiiciency in conditioning the atmosphere of the room in which they are located. Heretofore, the adjustable mounting for the n ""'zleson the supply pipes has usually oond of an arrangement of universaljoints As the orificebut, on account of the complication of construction involved and the danger of leakage, such mounting has been found tobe objectionable. In the present construction, however, by making the Vbranch pipes 22 and .46 of flexible copper tubes and arranging the `under pipe 22 vertically and curvingV the pipe 46 from the tube 28 at the rear end of the nozzle to the main water supply` pipe as shown in Fig. 1, it will be {apparent that the nozzle is rigidly supported and may be easily adjustedto any position desired by bendlng the pipes 22 and 46, the arrangement of these pipes being such that the desired positioning ofkthe nozzlel may be accomplished with the minimum degree of bending of the pipes.`

As will be evident to those skilled in the art my invention permits of various modifications without .departing from the spirit thereof or the scope of the appended claims.

What I claim is:

1. A nozzle of' the class described having, in combination, a casing having its rear end closed and its front end open, a liquid supply tube extending through an -aperture 1n the rear end wall of the casing, spaced from the inner wall of the casing and havin its inner end spaced from the front end o the casing, a nipple mounted on the inner end ot' the tube having its orifice of relatively small diameter and having longitudinally extending ribs spaced about its peripheral surface, a secondnipple mounted 1n the front end of the casing having its inner end -open and its front end closed, having an orifice in its front end wall in alinement with the orifice in the first mentioned nipple and having a portion of its inner wall substantially fitting said ribs, a partition in the second mentioned nipple and spaced from the front end wall thereof so as to form a chaml ber in the front end portion of said second mentioned nipple, said partition having anorifice in alinement with the orifices in said first and second mentioned ynipples and in communication with the spaces between the` `ribs on said first mentioned nipple, and an air supply conduit leading into said space between the liquid supply tube'and the inner wall ofthe casing.

2. A nozzle of the class described having, in combinatioma casing having a rear lend wall and havin its forward end open, a nipple mounted or'longitudinal adjustment on the forward end of said casin and having an' orifice in its outer end w a transverse partition mounted within said nip le, adjustable lon itudinally Ithereof, spaced a distance from die outer end wall thereof, and havingan orifcetherein in communication `with thel interior ofthe casing, a liquid sppl pipe extendingthrou han aperture 1n said rear wall off the casging, both of said orifices being of relatively small diameter,

' naly in said partition so ast'o .surround the yliquid centrally throu a second nipple mounted on the forward end its orifice of the orifice in said parthe supply pipe through the latter orifice, and a. conduit for supp ying 'air under pressure to the interior of ,said casin 3. A nozzle of theclass descri d having,v

. 1n combination, a nipple having an oriice 1n its outer end wall, ajpartition within said nip le mounted for adjustment longituditliereof, spaced romthe outer end thereof. and having an .orifice therein, said partition and louter end wall of said nipple defining the ends of .a closed. mixing chambeg and both of said orifices being of relatively small diameter, a second nip le hav.- ing its'oriice of smaller diameter t an the 4orifice in said partition ,and arranged to direct a jet ofliquid through the ylatter orifice .i and into the ispace between said .partition and the .outer end Wall of the iirst mentioned nipple, a conduit. for directing liquid through said second mentioned niplple, and

Ameans for directing air throught e orifice liquid passing therethrough. 4. A nozzle of the class described having,

in combination, a chamber havin front and rear end walls each having an ori ce of relatively small diameter the two orifices being 4in alinement and the orifice in said front wallv being4 ofl less diameter than the other orifice, and means for directing aA jet of h the orifice 'in the. rear wall of said cham er and for directing air Junder pressure through `thesame orifice and about the jet of liquid, the air and jetof liquid bein in intimate contact during thelilr passage t rough the 'orifice in said rear wa 5. A nozzle of the class described having,

I in combination, a chamber-having front'and rear walls with orices in said$walls of relatively small diameter the orifice :in the front Wall being smaller in diameter; than the other arranged in axial alinement and having th'feV interior of its lon itudinal wall contracted toward its forvvar `end, and means for directin'g a jet ogtiguid centrally through the v orificer in the rear wall of said chamber and for directing air under pressure through the same orifice and about the liquid passing therethrough, the liquidand air being in intimate contact during their -passage through the orifice in said .rear wall.

6. A nozzle of the class described having, in combination, a nipple having its front end wallv provided with an orice. of relatively small diameter, a partition within said nipple, vspaced from the ends having an orifice slightly larger than the orithereof and lice 'in `said Jliront end wall and substantially ripheral surface contracted toward its ori ce so that .the spaces between-said ribs are in communication with the orifice in said partition, a conduit forv supplyinfg second mentioned nip le, an rectin'g air' through t e space ribs on the second mentioned nip le. v

7 A nozzle of the class descri d having, in combinatioma chamber having front and rear end walls each having an orifice of relatively small diameter, the orifice in said front wall being of less diameter 'than the other orice, a nipple having its orifice in alinement with and of less diameter than the ori. lice in said rear end wall and having its orward end spaced a distance back of the orward end of the orifice in said rear end Wall, means for supplying liquid to said nipple whereby it is directed b the orifice therein centrally through the orifice insaid rear end wall, and means for direct-in under rese sure through the orifice in saidV rear w and about said jet of liquid.l

means for di'- bektween said liquid` to the 

